IMB-IO Blocking Benchmarks#
This section describes blocking I/O benchmarks. The benchmarks can run
with varying transfer sizes X
, in bytes. The timings are averaged
over multiple samples. The basic MPI data type for all data buffers is
MPI_BYTE
. In the definitions below, a single sample with a fixed I/O
size X
is used.
Every benchmark contains an elementary I/O action, denoting a pure read
or write. Thus, all benchmark flavors have a Write
and a Read
component. The [ACTION]
placeholder denotes a Read
or a
Write
alternatively.
The Write
flavors of benchmarks include a file synchronization with
different placements for aggregate and non-aggregate modes.
I/O Benchmarks, Aggregation for Output
